Java loop question - I think!

Question

Hello,
I currently have the below code which opens a file, reads all the contents and prints it. I would like to modify it such that it the searches the file for a particular word e.g. "from" and when it reaches it, it inserts something after it e.g. "me". I think I need to put a nested loop somewhere in my while loop. Can some advise me please?
Many thanks,
Aisling.
void modifyFile (String username)
String record = null;
int recCount = 0;
try {
FileReader fr = new FileReader("/tmp/Scripts/Script.xml");
BufferedReader br = new BufferedReader(fr);
record = new String();
while ( (record = br.readLine()) != null) {
recCount++;
System.out.println(recCount + ": " + record);
catch (IOException e) {
// catch possible io errors from readLine()
System.out.println("Uh oh, got an IOException error!");
e.printStackTrace();
}

Answer 1

I tried the replaceall suggestion but it still does not work. I have included my effort below -
Any ideas why it wont work?
My understanding is that the below code reads a file line by line. As long as the line isnt null(i.e. end of file), the contents of the file should be printed and any instances of "from" should be replaced with the variable username. This is then written back to the file. Correct?
Thanks again,
Aisling.
void modifyFile (String username)
String record = null;
int recCount = 0;
try {
FileReader fr = new FileReader("/tmp/Scripts/Script.xml");
BufferedReader br = new BufferedReader(fr);
record = new String();
while ( (record = br.readLine()) != null) {
recCount++;
record.replaceAll("from", username);
System.out.println(recCount + ": " + record);
FileWriter fw = new FileWriter ("/tmp/Scripts/Script.xml");
fw.write(record);
catch (IOException e) {
// catch possible io errors from readLine()
System.out.println("Uh oh, got an IOException error!");
e.printStackTrace();
}